Add 81/15 and 54/5
1st number: 5 6/15, 2nd number: 10 4/5
81/15 + 54/5 is 81/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 5 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 15 × 1 = 15,
81/15 = 81 × 1/15 × 1 = 81/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
54/5 = 54 × 3/5 × 3 = 162/15 - Add the two like fractions:
81/15 + 162/15 = 81 + 162/15 = 243/15 - 243/15 simplified gives 81/5
- So, 81/15 + 54/5 = 81/5
In mixed form: 161/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/30+54/5 81/15+54/10 81/45+54/5 81/15+54/15 81/75+54/5 81/15+54/25 81/15+54/35